Archaeologists Uncover a Symbolic Code Hidden in the Crater-Filled Plaza of the Moon in Teotihuacan

Archaeologists Uncover a Symbolic Code Hidden in the Crater-Filled Plaza of the Moon in Teotihuacan

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For weeks, archaeologists from the National Institute of Anthropology and History (INAH) of Mexico have been digging and exploring, for the first time, the bowels of the Plaza of the Moon at Teotihuacán. The team was surprised to find that when they saw the plaza facing the majestic Pyramid of the Moon from the air, it looked like a crater-packed moonscape.

They examined the series of holes and found that they had smooth green stone stelae inside them. The archaeologists also discovered passages that mark the center of this space with the directions of the universe (cardinal directions) and a series of holes containing river pebbles. All of these aspects make up a symbolic code that the ancient Teotihuacán people developed in the early stages of the city, almost 2,000 years ago.

"We are facing a new navel of the city, facing a new cosmic center. The Plaza of the Moon was not like we see it today. It was full of holes, canals, stelae, buildings were much more remote, and the Pyramid of the Moon was smaller. The limestone that forms the surface of the Plaza of the Moon was modified, we have identified more than 400 cavities that were used for over five centuries, small holes 20-25 centimeters [7.87-9.84 inches] in diameter and with depths of about 30 centimeters [11.81 inches] which cover the plaza, although the holes are more concentrated in certain areas. Many of them had river stones that were brought from elsewhere," reported Dr. Veronica Cabrera Ortega, director of the research project.

The excavations are being carried out under the surface of the Plaza of the Moon, in front of the Pyramid of the Moon.

The excavations are being carried out under the surface of the Plaza of the Moon, in front of the Pyramid of the Moon. (Proyecto Estructura A, Plaza de la Luna, Teotihuacán, INAH )

The INAH says that the project is analyzing the heart of the Plaza of the Moon, a sector of great importance. The work, which began in 2015, resumed in early April and will be completed by the end of next July. 

The excavations have focused on the area in front of the Pyramid of the Moon , known as Structure A: it is an enclosed patio that is 25 meters (82.02 feet) wide and it has 10 small altars in it. Through this work, they will try to find the origins of the ritual space of the Plaza of the Moon, and from boreholes created with the results of studies of the subsoil obtained through the use of ground penetrating radar, archaeologists have begun to recognize a series of alterations carried out by the Teotihuacán people. The modifications suggest an area that is very different from what is seen there today: that of a plaza bordered by 13 bases and the Pyramid of the Moon - which was built in the final stages of Teotihuacán (350-550 AD.)

So far, five full stelae have been found in the holes, with their heights ranging from 1.25 to 1.50 meters (4.10-4.92 ft.) and weights from 500 to 800 kgs. (1102.31-1763.70 lbs.) Pending the results of the various tests, it is possible that the green carved stones were from the region of Puebla, like another dozen stelae found earlier in Teotihuacán.

So far, five full stelae have been found in the holes.

So far, five full stelae have been found in the holes. (Melitón Tapia INAH )

"Years ago the archaeologist Otto Schöndube said Structure A had a base that resembled a " quincunx" or "Teotihuacán cross," which is associated with a cosmological order, but there were no more elements to understand this. When we found these pits and the green stone stelae we started generating the idea that indeed this was a space with a symbolic linking of the underworld with the celestial plane," Verónica Ortega said in the INAH press release.

The stelae are located in spaces that measure 60 cm (23.62 inches) wide and between 3.5 and 4 meters (11.48-13.12 ft.) deep. The holes had to be dug in the early stages of the city (100 AD.) This was the same time as the Pyramid of the Sun was erected and when the first construction stage of the Pyramid of the Moon began. According to the expert of the INAH, this system of trenches was in use at least 500 years because there is evidence (ceramic material) that the pits were opened and sealed.


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